CVE-2026-20837
Unknown Unknown - Not Provided
Heap-Based Buffer Overflow in Windows Media Enables Local Code Execution

Publication date: 2026-01-13

Last updated on: 2026-01-13

Assigner: Microsoft Corporation

Description
Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally.
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Meta Information
Published
2026-01-13
Last Modified
2026-01-13
Generated
2026-06-16
AI Q&A
2026-01-14
EPSS Evaluated
2026-06-15
NVD
CVE-2026-20837
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft windows_media *
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
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Executive Summary

This vulnerability is a heap-based buffer overflow in Windows Media that allows an unauthorized attacker to execute code locally on the affected system. [1]

Impact Analysis

An attacker exploiting this vulnerability can execute arbitrary code locally, potentially leading to full control over the affected system, including compromising confidentiality, integrity, and availability. [1]

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